package cn.edu.ctbu.datajpa01.webapi;


import cn.edu.ctbu.datajpa01.core.PageUtils;
import cn.edu.ctbu.datajpa01.domain.Student;
import cn.edu.ctbu.datajpa01.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping("/webapi/student")
public class StudentRestController {
    @Autowired
    private StudentService studentService;

    /**
     * 读取的url:/webapi/student/list
     * @return
     */
    @GetMapping("/list")
    public List<Student> getAll(){
        List<Student> students = studentService.findAll();

        return students;
    }

    /**
     * 分页读取全部内容
     * @return
     */
    @GetMapping("/getbypage")
    public PageUtils getByPage(@RequestParam(value = "page",defaultValue = "0") Integer page,
                               @RequestParam(value = "size",defaultValue = "10") Integer size){

        //按id排倒序
        Sort sort = Sort.by(Sort.Direction.DESC,"id");
        Pageable pageable = PageRequest.of(page, size, sort);
        Page<Student> studentPage = studentService.findAll(pageable);


        PageUtils pageUtils = new PageUtils(studentPage.getContent(),studentPage.getTotalElements());
        return pageUtils;
    }

    /**
     * 读取的url:/webapi/student/get/id
     * @return
     */
    @GetMapping("/get/{id}")
    public Student get(@PathVariable Integer id){
        Student student = studentService.getById(id);



        return student;
    }

    /**
     *  查询学生方法:/webapi/student/find
     *
     * @return
     */
    @GetMapping("/find")
    public List<Student> findByName(String name){
        List<Student> students = studentService.findByName(name);
        return students;
    }


    /**  
     * 新增学生方法:/webapi/student/insert
     * @param student
     * @return
     */
    @PostMapping("/insert")
    public Student insert(Student student){
        Student student1 = studentService.insert(student);
        return student1;
    }

    /**
     * 更新学生方法:/webapi/student/update
     * @param student
     * @return
     */
    @PutMapping("/update")
    public Student update(Student student){
        Student oldstudent =studentService.getById(student.getId());
        if (StringUtils.isEmpty(student.getPassword())){
            student.setPassword(oldstudent.getPassword());
        }
        student = studentService.update(student);
        return student;
    }

    /**
     * 删除学生方法:/webapi/student/delete
     * @param
     * @return
     */
    @DeleteMapping("/delete/{id}")
    public void delete(@PathVariable Integer id){
        studentService.delete(id);

    }


}
